5) Get ready for another member-versus-member primary because it's official in Louisiana: Republican Reps. Jeff Landry and.Charles Boustany will run against each other. 4) President Obama's campaign is expected to spend less than $100,000 on its new Bain attack ad, CNN reports. An earned media play will get called out more times than not. 3) North Carolina isn't the only state that is a key part of Obama's electoral strategy and is also grappling with same-sex marriage and civil unions: Colorado rejected a bill allowing civil unions on Monday. 2) There's no doubt that Elizabeth Warren needs to find a way to shift the focus in the Massachusetts Senate race, which for two weeks has centered on questions about her heritage. Warren's camp is focusing on JPMorgan Chase and calling on Jamie Dimon to resign. And she's up with a new radio ad on Wall Street accountability. But Sen. Scott Brown's campaign is not backing away from the Native American heritage issue and continued to go on offense with it on Monday. Here's some much-need good news for Warren: Boston was her top campaign donation city in the first quarter (it was New York for Brown). 1) It's Election Day in Nebraska, where the wild three-way GOP Senate primary will reach its conclusion. Will frontrunner Jon Bruning pull it out? Or can underdog Deb Fischer upset him? And where will Don Stenberg finish and what will it mean for the outside groups that backed him? The latest from Monday: Bruning's camp was running robo-calls featuring Mike Huckabee while five TV stations pulled a super PAC ad attacking Bruning. Check out our complete preview and stay tuned to Hotline On Call this evening for results.